Corrugated pipe

Description

FIG. 1 is a side elevational view of a corrugated pipe showing my new design;

FIG. 2 is an end elevational view thereof;

FIG. 3 is an elevational view taken from the end opposite that shown in FIG. 2;

FIG. 4 is an elevational view taken from the side opposite that shown in FIG. 1;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D213828 April 1969 Blake
D222643 November 1971 Martin et al.
D235100 May 1975 Maroschak
2073335 March 1937 Connell
3878685 April 1975 Schmunk
3926222 December 1975 Shroy et al.
4113818 September 12, 1978 Drossbach
4163619 August 7, 1979 Fales
4175882 November 27, 1979 Gilead
4182580 January 8, 1980 Hieda et al.
4624603 November 25, 1986 Kanao
Patent History
Patent number: D296356
Type: Grant
Filed: Mar 5, 1985
Date of Patent: Jun 21, 1988
Inventor: Shiro Kanao (Takatsuki-shi, Osaka)
Primary Examiner: James R. Largen
Law Firm: Sughrue, Mion, Zinn, Macpeak, and Seas
Application Number: 6/708,473
Classifications
Current U.S. Class: Pipe, Tubing Or Hose (D23/266)